Trolley device.



P. A. ROBBINS.

TROLLEY DEVICE.

ArPLIoA'rmn funn Nov. 11, 1907.

Patented Dec. 8, 1908 STATES PATENT OFFICE. i sassi; s. sessies; woncnsraa, mssaoucsnrrs;

No. `906,161. p Specification-'of Letters Patent. Patented IDec.V 8, 190B. i

application :una Noventa n, n.001. zum ne. cansan.

' To 'rml/'whom it may concern: adapted to turn. ABetween the holder 17 and ent known4 that I, FnANK A. Ronma'a the lug 14 are one or more springs 18. clitizen of the United States, residing at These springs are, or may be, of any usual f Worcester, in the countgY of-Worcester and construction' put in position Aand adjusted in so e State-of Massachusetts, ave invented a new' any usual way, but Instead ofbeing located and useful Trolley Device, of which the folin the usual manner, they are so placed that lowing is a' specification. when 'the holderl is turned downwardly This inventionrelates to a trolley for elecabout its pivot'to let the trolley pole 20 rest y tric cars. i on the top of the car, the springs pass 65 1o The principal objects of the invention are through the point of greatest tension and to provide an improved way of supporting are then located below the axis 16 so that the trolley harp and wheel in such a. manner while the?)7 are still under some tension, they that they will be movable with respect to the are not t en under their'maximuni tension. trolley poles and will be pressed up there- Under ordinary* circumstances, the springs 7o from by a direct spring ressure toward the which are used at this point are always un- Y trolley wire when the w eel is on the Wire der the heaviest tension to which they are and yet the motion of the harp with respect ever subjected when the cars are out of use to the trolley pole cannot possibly result in in the car barn, which obviously has a most a binding action between these two elements; important bearing on the length of life of `75 2o also to provide for efficiently holding the the springs. By this invention the'life of trolley ,harp .in proper position and at the the springs is necessarily prolonged oil acsarue time preventing it from movin far count of the fact that they are .not under out of the vertical; to rovide means w ereheavy tension at this time, and when they by the trolley wire w11 be prevented from are 1n use on the road the are not-under 8o passing into the space between the sides of any more tension than is t e case with the the harp and the wheelA and to hold the present construction. Another advantage wheel on the harp in case of any accident, of this construction `is that after lthe springs such as the loss of the shaft on which the pass the oint of greatest tension, they will wheel turns; and generally, to improve the act to pu l the tro l` 30 construction and operation. of electric car and thus it will 4not e necessary to provide trolleys of this character. any means for tying the pole down and Further objects and advantages of the inthere will be nothing which can et out of vention will appear hereinafter. order and let the pole ilyup an possibly Reference is to be had to the accom anystrike overhead wires and cause dama e. 9o

ing drawing which shows certain pre erred In order to provide for gently limitin the embodiments of the invention and 1n which, upward movement of the trolley po e in Figure lis a side elevation of thesame. case the trolley gets oi'the wire, a spring Fig. 2 is a similar View on an enlarged scale buffer 21 is provided on the projection 15. showing the upper part of the device. Fi This acts in an obvious manner, as indicated 95 '3 3 is an end elevation of the same. Fig. 4 1s in Figs. 1 and 5. l

a view similar to Fig. 2 showing certain On the upper end of the pole 20 a trolle modifications and Fig. 5 is a plan of the harp holder 25 is supported; Thisholder 1s lovIver part oi the device showing the same. deslgned to be olf-set downwardly from the n t the device is supported on a base 10 mounted may be substantie ly horizontal Vwhen the in fixed position on the top of the carin any device is in use. In order to accomplish this usual way. This base is provided with a result, t e holder is provided with an extenball-race 11 on its upper surface in which sion 27 aving an end 28 which fits the end bearing balls 12 are located and on which is of the trolley pole in any desired way and is 105 supported a turret 13 adapted to swin on secured thereto, this end being in line with the vertical axis through the center o the the trolleypole. The holder is provided with ballrace. This turret isprovided with one a 'downwardly flaring paage'- 29 through or more lugs 14 at the front and with a prowhich a rod 30 is adapted to pass. A spring jection 15 at the rear. Dn this projection 31 surrounds the rod and rests on the bearin 11o 1s mounted a shaft 16 which constitutes the 26 engaging the bottom surface of the tro axis about which a trolley pole holder 17 is ley harp32. A cotter-pin or the like 38 e pole down on the car l e form of the invention illustrated, pole so that its upper bearing surface 26 100 passes through the rod 30 and limits the upward motion of this rod caused by the spring. It will be obvious that with this construction, the spring acts to lift the harp and the .opening 29 allows the rod to move througlrit and is of such a shape as to prevent any bindin thereof if its motion is not strictly vertic In order to prevent the rod from turning, it is provided with a longitudinal slot 34 and a rojection 35 extends into the opening 29 aniljinto the slot lll. This projection is shown in the-form of a removable screw but that is not a necessary construction. In 0rder to further assist this operation and revent the harp from turning and also to old it in substantially a vertical position, a pair of links 40 are pivotally mounted at the u per end of the extension 27 so as to freel)y swing and are provided with slots- 41 in their opposite ends through which projections or the like 42 on the harp extend. It will be seen that this provides for preventin any great inclination of the rod 30 and a lows suflicierit play for ordinary pur oses and es pecially to provide for roun ing curves. Also it assists in holding the har from turning too far and furthermore, it as another important function in that the links 40 being inclined, cut off the space between the rod 30 and the extension 2T so that if the trolley does get olf the'wire, these links 40 will receive the cross wire and let it run up over the wheel instead of allowin it to catch in the depression. Another orm-of these links is shown in Fig. 4 in which they appear as a U-shaped strap 45 having a slot and operating in about the same way. In this case also another modieation is shown in that at the upper end of the extension 27 are a pair of flanges 46 which can be clamped together around the end of the pole instead of beingfastened in the usual Way, as indicated in Fig. 2.

Any ordinary form of harp may be used with this invention.

The cord by which the conductor controls the trolley may be fastened in an eye 48 or in an eye 49, one being on the harp and the other on the holder.

In order to provide for preventing the wire from getting between the wheel and the harp and to prevent accidental displacement from the harp, the har is provided with a air of inwardly extending lips 50. As the iarp is held in vertical position, these li s can be made on the to thereof so as to e sure to catch a wire l if the trolley runs olf and revent its passing down between the whee and harp. In order to accomplish this, the li s preferabl extend inward y so far that t e distance thanthe width of the flange of the trolley wheel 52. In order to provide for this and yet permit the wheel to be applied and removed, the wheel has a pair of slots 53 etween them is less through which the lips may be It will be seen, therefore, that the wire is not only prevented from getting down into this space but also the wheel is prevented from bein accidentally removed in case the sho d become loosened in operation or in an accident.

described is notl claimed herein as it forms the subject of a separate divisional application. i

While I have illustrated and described certain preferredforms of the invention, I am aware that many modifications may be made therein bylany rson skilled in the art without departing Ireorn the scope of the invention as expressed in the claims.

' Havin thus fily described my inventioni what I c aim and desire to secure byltters- Patent is l. As an article of manufacture a trolley wheel having opposite, substantlall continuous, circular outwardly-flaring each provided with a. slot in the outer slds of the cuter edge thereof located substantially per ndicular to the axis of the wheel, sai slots being located op osito each other, whereby said wheel may E to and removed from a trolley harp having integral inwardly-projecting es in inwardly extnd1ng` li a wheel threfor, the lian es of vlihchwere wider than the distance `etvveen thesli 'fand are provided witl'slts to permit tlig application and removal'of the wheel. r

inwardly at the` top thereof maily with a wheel mounted` n flanges being wider than the said lips, said flanges'h the wheel may be removed or applied withlout tipping the wheel :rv'ft respect to the al' i l c theA erp, its acs between l ating per eration V supiortedon said bearing and g said rod, n nd means on the rod ng the'under side of the holder for limiting the upward motion of the rod' therein.

5. In a trolley, the combination oa harp, a rod extending downwardly therefrom, o holder for the rod havin a; bear the top and a downwardly gering dra. ion kt)herethrough, a spring sup orte@l nlsaid caring and en a n said f vmeans on the rod en gignggl t e underldldef theY holder for imiting the u4 .r the rod therein, and mean/Sfdwpoentlng said rod from turning. f

6. In a trolley the o -a ja rod- :meer

2. The combination of s troly'v havefr lah 8. A trolley harp having lipseeuxttnddii 'Ihe trolleybase which I have shown and 'at the l iss holder for the rod having si` beerin at the top and e downwardly haring per oration therethrough, n sprin supported on said bearing and surroun ing said rod, said holder having a projection bywhich it may be secured to a trolley pole, and means on the holder and also on the projection for preventing the harp from turning.

7. In a trolley, the combination of a harp, n rod extending downwardly therefrom, a holder for the rod having a downwardly Haring perforation therethrou h, a spring .supported on said holder an supporting said hui-p, n link movably connected with the holder and loosely connected with the harp for preventing the harp from turning und for holding the harp substantially in vertical osition on the holder, whereby seid bearing will guide the rod on the har but` will not cause the sente to bind when it is slightly out of vertical position.

8. In a trolley, the combination of aholder assage therethrough, s. trolley har a ro extendin through said passage an connected with tge herp,where by the rod may be swung out of e. vertical position without binding in said passage.

9. In a trolley, the combination of e holder having a flaring passage therethrough, e trolley her a rod extending through seid )tissage an connected with the' harp, whereby the rod may be swung out of a, vertical position without binding in said passe re, and a pro'ection in said passageV on tie holder.r sai rod having a slot for receiving said projection to hold the rod against turning.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

FRANK A. ROBBIN S. Witnesses:

A. E. F AY, C. FoRREs'r Wesson.

having e flaring 

